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AssigneeJfe Steel Corporation
InventorsKeiichiro Kishi, Yoshihiro Yazawa, Shunichi Tachibana, Yota Kuronuma, Toshiyuki Hoshino
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A cladding material for stainless steel clad steel plate, includes, by mass %, 0.03% or less carbon, 1.5% or less silicon, 2.0% or less manganese, 0.04% or less phosphorus, 0.03% or less sulfur, 22.0% to 25.0% nickel, 21.0% to 25.0% chromium, 2.0% to 5.0% molybdenum, 0.15% to 0.25% nitrogen, and the balance being iron and incidental impurities, wherein critical pitting temperature (CPT) after normalization as determined in accordance with ASTM G48-03 Method E is 45° C. or higher, and corrosion loss at a welded zone as determined by a corrosion test in accordance with NORSOK Standard M-601 is 1.0 g/m2 or less.
A stainless steel clad steel plate comprising the cladding material for stainless steel clad steel plate, consisting of, by mass %, 0.03% or less carbon, 1.5% or less silicon, 2.0% or less manganese, 0.04% or less phosphorus, 0.03% or less sulfur, 22.0% to 25.0% nickel, 21.0% to 25.0% chromium, 2.0% to 5.0% molybdenum, 0.15% to 0.25% nitrogen, optionally 0.0010% to 0.0055% boron, and the balance being iron and incidental impurities, wherein the critical pitting temperature (CPT) after normalization as determined in accordance with ASTM G48-03 Method E is 45° C. or higher, and the corrosion loss at a welded zone as determined by a corrosion test in accordance with NORSOK Standard M-601 is 1.0 g/m2 or less, and a carbon steel or a low-alloy steel as a base material, and having a total thickness of 30 to 100 mm.
Dependencies are inferred from the claim text.